CN201129945Y - Engine exhaust and air heat exchanger - Google Patents

Abstract

The engine exhaust and air heat exchanger is a heat exchange device; the front and rear fixing plates are installed in the housing assembly cavity to divide the housing assembly cavity into a front chamber, a heat exchange chamber and a rear chamber. The radiating pipes equipped with radiating blades are arranged in the heat exchange chamber, and their front and rear ends are respectively fixed on the front and rear fixing plates. The holes of the radiating pipe connect the front and rear chambers; the hot air outlet pipe is installed in the shell assembly The upper part communicates with the heat exchange chamber; the two ends of the air input pipe are respectively connected with the heat exchange chamber of the shell assembly and the air blower; the engine exhaust diverter cone in the shape of a hollow cone is installed in the front chamber; The device makes full use of the heat energy of engine exhaust and air for heat exchange application, which reduces the loss of waste energy. It has the characteristics of simple structure, high thermal efficiency, safe and reliable use, and energy saving.

Description

Engine exhaust and air heat exchanger

technical field

The utility model belongs to a heat exchanger, and mainly relates to an appliance for exchanging heat energy with air by using engine tail gas heat.

Background technique

The exhaust temperature of diesel or gasoline engines is about 500°C. In many machines, most of these high-temperature exhaust gases are directly discharged into the atmosphere, resulting in the loss and waste of heat energy. In recent years, in the cold regions of northern my country, on ordinary long-distance buses, the exhaust gas of the engine is used to heat the cooling pipes laid on the floor of the carriage in winter to increase the temperature inside the carriage. The accident of the article, the use is not safe. In addition, the heat exchange products of engine exhaust and water heat exchange have the disadvantages of slow temperature rise and poor heat exchange effect.

Contents of the invention

The purpose of this utility model is to solve the problems existing in the above-mentioned prior art, and design and provide an engine exhaust gas and air heat exchanger, so as to make full use of waste heat energy, reduce heat energy loss and waste, improve heat exchange efficiency, and ensure safe use.

The basic design of the utility model is that a front fixed plate and a rear fixed plate are installed horizontally in the cavity of the housing assembly, and the cavity of the housing assembly is divided into a front chamber, a heat exchange chamber and a rear chamber in sequence; The two ends of the tube are respectively fixed on the front fixing plate and the rear fixing plate, and the heat dissipation pipe is arranged in the heat exchange chamber as a whole, and the pipe hole of the heat dissipation pipe communicates with the front chamber and the rear chamber; the hot air outlet pipe is installed in the shell assembly The upper part communicates with the heat exchange chamber; the two ends of the air input pipe are respectively connected with the shell assembly and the air fan, and the heat exchange chamber of the shell assembly communicates with the air fan, thus forming the engine exhaust gas and air heat exchanger.

The utility model has the advantages of simple structure, high heat exchange efficiency, fast temperature rise, safe and reliable use, energy saving and reduced heat energy loss.

Description of drawings

The accompanying drawing is a schematic diagram of the overall structure of the engine exhaust gas and air heat exchanger.

Description of part number in the figure:

1. Air vent, 2. Front fixing plate, 3. Hot air outlet pipe, 4. Hot air output distribution cover, 5. Heat dissipation pipe, 6. Shell assembly, 7. Insulation layer, 8. Rear fixing plate, 9. Rear Chamber, 10, air blower, 11, air input pipe, 12, heat exchange chamber, 13, heat dissipation blade, 14, front chamber, 15, engine exhaust diversion cone.

Detailed ways

The best implementation of the utility model will be described in detail below in conjunction with the accompanying drawings. A heat exchanger for engine exhaust gas and air, in which a front fixing plate 2 and a rear fixing plate 8 are installed horizontally in the 6 cavities of the housing assembly, and the 6 cavities of the housing assembly are sequentially divided into a front chamber 14 and a heat exchange chamber chamber 12 and rear chamber 9; both ends of the heat dissipation pipe 5 are fixedly connected to the front fixed plate 2 and the rear fixed plate 8 respectively, the heat dissipation pipe 5 is integrally arranged in the heat exchange chamber 12, and the holes of the heat dissipation pipe 5 are connected to the front chamber 14 and the rear chamber 9 communicate with each other; the hot air outlet pipe 3 is installed on the shell assembly 6 and communicates with the heat exchange chamber 12; the two ends of the air input pipe 11 are respectively connected with the shell assembly 6 and the air fan 10, and the shell The heat exchange chamber 12 of the body assembly 6 communicates with the air blower 10 . An engine exhaust gas splitter cone 15 is fitted in the front chamber 14 . Heat dissipation fins 13 are assembled on the outer wall surface of the heat dissipation pipe 5 . The heat insulating layer 7 is fitted on the inner wall surface of the housing assembly 6 cavities. Fit hot blast output distribution cover 4 at hot blast outlet pipe 3 air outlet ends. The engine exhaust gas distribution cone 15 is in the shape of a hollow cone as a whole, and vent holes 1 are opened on the wall surface of the hollow cone-shaped engine exhaust gas distribution cone 15 .

During use, the utility model is fitted on the engine exhaust pipeline, and high-temperature engine exhaust gas enters the housing assembly 6 front chamber 14, cooling pipe 5, rear chamber 9 successively, and then discharges outside the machine. The exhaust gas in the heat dissipation pipe 5 passes through the heat dissipation pipe 5 and the heat dissipation blade 13 to complete the heat exchange with the cold air entering the heat exchange chamber 12 from the air fan 10 and the air input pipe 11, and the heated hot air enters the hot air output through the hot air outlet pipe 3 Distribution cover 4 carries out hot air supply. The engine exhaust diverter cone 15 guides and distributes the mass exhaust gas that the engine exhaust pipe imports into the front chamber 14, so that the exhaust gas evenly enters the heat pipes 5. The insulation layer 7 reduces the heat loss of the exhaust gas in the shell assembly 6 .

Claims (6)

1. An engine exhaust gas and air heat exchanger, characterized in that a front fixing plate (2) and a rear fixing plate (8) are installed transversely in the housing assembly (6) cavity, and the housing assembly (6) The cavity is divided into a front chamber (14), a heat exchange chamber (12) and a rear chamber (9) in sequence; the two ends of the heat dissipation pipe (5) are respectively fixed on the front fixing plate (2) and the rear fixing plate (8 ), the heat dissipation pipe (5) is integrally arranged in the heat exchange chamber (12), and the pipe hole of the heat dissipation pipe (5) communicates with the front chamber (14) and the rear chamber (9); the hot air outlet pipe (3) Installed on the shell assembly (6) and communicated with the heat exchange chamber (12); the two ends of the air input pipe (11) are respectively connected with the shell assembly (6) and the air fan (10), and the shell assembly The heat exchange chamber (12) of (6) communicates with the air blower (10). 2. The heat exchanger for engine exhaust gas and air according to claim 1, characterized in that an engine exhaust gas distribution cone (15) is installed in the front chamber (14). 3. The engine exhaust gas and air heat exchanger according to claim 1, characterized in that heat dissipation fins (13) are fitted on the outer wall of the heat dissipation pipe (5). 4. The heat exchanger for engine exhaust gas and air according to claim 1, characterized in that an insulating layer (7) is installed on the inner wall surface of the cavity of the housing assembly (6). 5. The engine exhaust gas and air heat exchanger according to claim 1, characterized in that a hot air output distribution cover (4) is fitted at the end of the air outlet of the hot air outlet pipe (3). 6. The engine exhaust gas and air heat exchanger according to claim 2, characterized in that the engine exhaust gas distribution cone (15) is in the shape of a hollow cone as a whole, and the hollow cone-shaped engine exhaust gas distribution cone (15) Air vents (1) are provided on the wall.

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